Pharmacology and the Nursing Process by Linda Lane Lilley: Practice Exam

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Why is warfarin strongly contraindicated in pregnancy?

  1. It is classified as a Category A drug

  2. It has no effect on pregnancy

  3. It is safer than other anticoagulants

  4. It is rated higher in pregnancy categories

The correct answer is: It is rated higher in pregnancy categories

Warfarin is strongly contraindicated in pregnancy because it is rated higher in pregnancy categories, particularly in the first trimester. In this stage of pregnancy, the fetus is undergoing important developmental processes and any disruption in blood flow and clotting can have harmful effects on the baby. While warfarin is not completely ineffective during pregnancy, alternative anticoagulant options are generally considered to be safer for both the mother and the developing fetus. These alternatives are often preferred because they are rated lower in pregnancy categories and have shown to have less risk of potential harm to the baby.

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